JT/LJ T
specials - ground plane connectors and shielded
contacts
Amphenol offers MIL-DTL-38999 Series I and II* connectors for data bus, LAN
and coax/triax/twinax transmission lines with conductive inserts that ground the
outer conductor of the coax, triax or twinax contact to the shell. These connec-
tors are sold “less contacts”. They will accommodate size 8 coax, triax or twinax
contacts or size 12 and 16 coax contacts.
The insert availability chart on pages 4-6 indicate the patterns that are available
in a ground plane version, (see those designated with a star symbol), and
consult how to order page for ordering procedure.
CONNECTORS WITH COAX CONTACTS
For shielded wire applications, coaxial contacts can be incorporated into MIL-
DTL-38999 connectors. Designed-in crimp or solder types are available to fit
various RG and special cables. High performance coaxial contacts eliminate
discontinuities or impedance variations due to movement of parts under axial
load. For further information on coax contacts ask for catalog 12-130.
CONNECTORS WITH CONCENTRIC TWINAX CONTACTS
Ground Plane Connector with Metallic
Insert, Power Contacts and Shielded
Twinax Contacts
The size 8 concentric twinax contact was developed for use in MIL-STD-1553
Airborne multiplex data bus applications which require high performance
interconnect characteristics in multi-pin connectors. Ideal for this application
need is the high performance Tri-Start connector with its fully scoop-proof
feature of recessed pins. (See Amphenol catalog 12-092) The concentric
twinax contact is crimp terminable to twisted-shielded cable. Other features
include:
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Provides protection from magnetic and electrostatic interfer-
ence
including nuclear electromagnetic pulse
Maintains shield integrity through a multi-pin cylindrical
connector and does not require contact polarization within
the insert
175°C rated and meets performance levels of MIL-DTL-
38999 Series III connectors
•
•
•
•
Available in size 8 and 12 contacts
MIL-C-17/176-00002 cable termination
Qualified to M39029/90 & /91
Size 8 Concentric Twinax Contacts
Qualified to M39029/90 and /91
(Also available in Size 12)
Integral part of the MIL-STD-1760 interconnection system
For further information on concentric twinax contacts, consult
catalog 12-130.
CONNECTORS WITH REDUCED COMPONENT
TWINAX (RCT) CONTACTS
The RCT (Reduced Component Twinax) contact meets MIL-C-
39029/90 and /91 requirements for intermateability and perfor-
mance while reducing the number of user-assembled compo-
nents from seven to three. The inner conductors and outer barrel
of the RCT are each terminated to the cable by a crimp joint, so
no costly assembly soldering operations are required. Features
include:
Size 8 RCT (Reduced Component Twinax) Contact
(Also available in Size 10)
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•
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Three user assembled components
Available in size 8 and size 10 contacts
MIL-C-17/176-00002 cable termination
For installation in MIL-DTL-38999 Series III connectors
Termination completed in only two crimping operations
Inner conductors stripped to common length, eliminating
multiple measurements
*MIL-DTL-38999 Series III
For further information on RCT contacts, consult catalog 12-130.
supersedes MIL-C-38999 Series III
55
AMPHENOL [ Amphenol ]
